Grain-saving device for pneumatic stackers.



No. 768,781. PATBNTBD AUG. so, 1904.

E. THBIN. GRAIN SAVING DEVICE PUR PNBUMATIC STAGKERS.

APPLICATION FILED JAN. 11. 1904.

' 3 SHEETS-SHEET l.,

PATENTED AUG. 30, 1904.

E. THEIN. GRAIN SAVING DEVICE FOR PNEUMATIG STAGKERS.

APPLIGATION FILED JAN. 11. 1904. N0 MODEL. 3 SHEETS-SHEET 2.

PATBNTED AUG. so, 1904, E. T HHLN. GRAIN SAVING DEVICE PoR PNEUMATIO STACKERS.

APPLICATION FILED JAN. l1. 1904.

3 SHEETS-SHEET 3.

N0 MODEL.

Muffy/024, Eugene 726/27,

I MW UNTTED STATES Patented August 30, 1904.

PATENT CEETCE.

GRAIN-SAVING DEVICE FOR PNEUIVIATIC STACKERS.

SPECIFICATION forming part of Letters Patent No. 768,781, dated August y30, 1904.

T0 @ZZ whom, it ncty/ concern:

Be it known that I, EUGENE THEIN, acitizen of the United States, residing' at Clara City, in the county of Chippewa and State of Minneseta, have invented certain new and useful Improvements in Grain-Saving Devices for Pneumatic Stackers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to pneumatic stackers, and has for its object to provide a grain-saving attachment or adjunct thereto.-

To the above ends the invention consists of the novel devices and combinations of devices hereinafter described, and defined in the claims.

It is a well-known fact that in the use of pneumatic stackers as usually constructed a very considerable amount of grain is blown into the stack with the straw, and hence is wasted.

By my invention I am able to separate from the straw as it is passing through the -pneumatic stack or tube nearly all of the grain which is carried thereinto with the straw.

rl`he invention is illustrated in the accompanying drawings, wherein like characters indicate like parts throughout the several Views.

Figure l is a side elevation showing' a portion of a threshing-machine having applied thereto a pneumatic stacker designed in accordance with my invention and having incorporated therein my improved grain-saving' device, some parts being broken away and some parts being shown in section. Eig. 2 is an enlarged section on the line m2 of Eig. 1, some parts being broken away. Fig. 3 is a Vertical section on the line :r3 of Eig. 2. Eig. 4 is a detail, partly in section on the line fr* fr* of Eig. 1 and partly in rear end elevation, illustrating means for driving the endless conveyer of the grain-saving device; andFig. is a transverse section on the line fr of Fig. l.

Of the parts of the threshing-machine the numeral 1 indicates the case, the numeral 2 the rear wheels, and the numeral 3 a belt driven from the running parts of the same.

The numeral 4 indicates the case of the pneumatic discharge-fan, the same having a discharge-neck 5 that leads to the pneumatic stack or discharge-tube, presently to be described.

The numeral 6 indicates the shaftof the .stacker-fan, the same having a pulley 7, over which runs the power-driven belt 3 to impart motion to the said fan in the usual way.

rIhe numeral 8 indicates the pneumatic discharge stack or tube, which leads from the neck 5 of the fan-case 4 and may be supported and adjusted in the usual way by any suitable means. In accordance with my invention this stack 8 is formed at or near its receiving end witha crooked or bent deiectingsection 9,preferably made up in part of looselyconnected sections for permitting the vertical movements of the stack. The receiving end of said stack is preferably connected with the neck 5 by a swivel-joint which permits lateral adjustments of the stack in the usual way.

Just outward of the crooked section 9 the bottom of the stack 8 is preferably cut away, as shown at lO, and provided with a plurality of longitudinally-extended bars 11, that constitute a grate which will freely pass the grain ,precipitated onto it, but which will cause the straw to pass onward through the stack. Extending below the opening 10 and to the rear of the same is an inclosed leg or casing 12, which at its rear end terminates in the discharge-spout 13. If desired, the opening lO and grate bars or rods l1' may be eX- tended nearly the entire length of the stack. Mounted within the leg or casing 12, one near the forward end and one near the rear end thereof` is a pair of rollers 14 15, the latter of which has a projecting shaft provided at one end with a miter-gear 16, that meshes with the miter-gear 17, the stub-shaft of which is journaled in a bearing 18 on the side of said leg and is connected by knuckle-joint 19 to one member of an extensible driving-shaft 20 2l. connected by a knuckle-joint 22 toa stub-shaft 23, journaled in a bracket 24 on the projecting beam 25 of the case 1. At its lower end the stub-shaft 23 is provided with a miter-gear 26, that meshes with the miter-gear 27 of a rIhe lower end of the shaft-section 21 is 95 IOO short shaft 28, also journaled in the bracket 24. At one end the shaft 28 is provided with a pulley 29, over which and a relatively small pulley 30 on the fan-shaft 6 runs a belt 31, which imparts motion from said fan-shaft to `said pulley 29, and from thence through the connections described to the roller 15. A wide-faced flexible belt 32, preferably of canvas, runs over the rollers 14 and 15, and this belt is preferably provided with a plurality of closelypositioned transversely-extended buckets or pockets 33. In order that the slack of the belt 32 may be taken up, the roller 14 is preferably adjustably mounted, this being conveniently done by mounting the ends of the shaft 14 in sliding bearings 34, that are subject to take-up screws 35, which, as shown, have screw-threaded engagements with lugs 36 on the sides of the leg 12 and act upon said bearings 34. The discharge-spout 13 of thc leg 12 discharges into a return-chute 37, which delivers to an elevator 33 of the threshing-machine, which elevator will deliver the grain back to the threshing-cylinder or to some other desirable point.

The action is substantially as follows: The straw which is passed through the pneumatic stack or tube, commingled with more or less grain, will be forced under great velocity through the crooked or curved section 9 and will be thrown violently down onto the grating formed by the bars 11. This, as is evident, will have a great tendency to precipitate the grain directly through the grating at its receiving end and most of the grain will be precipitated through the grating at this point. Some thereof, however, may still be held by the straw, so that it will be carried therewith over the grating for some distance; but practically all of the grain will be dropped by the straw and precipitated through the grating at some point.

As is evident, any grain, either completely threshed or heads of grain not completely threshed from the pod, which are percipitated `through the grating, will be caught in the pockets of the endless conveyer 32 and will be carried thereby and discharged into the spout 13, and will be carried from thence by the chute 37 and elevator 38 back to the threshing-cylinder or other suitable point of deposit.

rI`he above-described grain-saving device, while extremely eflicient for the purposes had in View, does not interfere to any perceptible extent with the discharge of the straw. The amount of grain which it will save will pay for the cost of the attachment or grain-saving device in a very short time.

In the drawings I have illustrated what I at present believe to be the most efficient form of the device, but it will of course be understood that the said device is capable of many modifications within the scope of my invention as herein set forth and claimed.

That I claim, and desire to secure by Letters Patent of the United States, is as follows:

1. In a pneumatic stacker, the combination with the stack or discharge-tube having a grating in its bottom, and a conveyer working below said grating, substantially as described.

2. In a pneumatic stacker, the combination with a stack or discharge-tube having a grating' in its bottom, of a leg extending below said grating, and an endless conveyer working in said leg for receiving the grain precipitated through said grating and for discharging the same, substantially as described.

3. In a pneumatic stacker, the combination with a stack or discharge tube having a grating in its bottom, of a leg attached to said stacker and extending below said grating and terminating at one end in a dischargespout, of a positively-driven endless conveyer working within said leg, below said grating, substantially as described.

1. In a pneumatic stacker, a stack or discharge-tube having' a grating in its bottom, and having an internal portion arranged to deflect the straw downward onto said grating', substantially as described.

5. In a pneumatic stacker, a stack or discharge-tube having a grating in its bottom and having a crooked or bent receiving portion arranged to deflect the straw downward onto the said grating, substantially as described.

6. In a pneumatic stacker, the combination with a stack or discharge-tube having a grating in its bottom, and having a crooked receiving portion arranged to deflect the straw downward onto the said grating, of a leg extending below said grating and attached to said stack, and an endless conveyer working within said leg below said grating, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

EUGENE THEIN.

l/Vitnesses:

Guo. N. SoHUL'rn, J. J. Guns.

IOO

IOS 

